Sliding Windows: Are They Good for Energy Efficiency in 2023?

When it comes to choosing new windows for your home, energy efficiency is a top concern for many Canadian homeowners.

Energy-efficient windows can help you save money on energy bills, improve your home’s thermal performance, and increase its value. 

In this article, experts from Ecoline Windows Edmonton will help us explore the energy efficiency of sliding windows, their benefits, and their drawbacks compared to other window styles.

Are Sliding Windows Energy Efficient? 

The short answer is affirmative; sliding windows can be energy-efficient if you choose Energy Star-rated units.

However, the energy efficiency of sliding windows depends on the type of glass used in the windows. The glazing of the windows acts as a barrier between the outdoor weather and the indoor environment. 

Sliding windows are an excellent choice for energy efficiency since they are typically LoW-e coated, which reflects infrared light and reduces heat transfer.

Another crucial factor in determining the energy efficiency of sliding windows is the number of panes.

  • Double-paned windows are the most common and reflect twice as much heat into the house on cold winter days.
  • However, triple-paned windows reflect even more heat, up to three times as much.
  • Sliding windows with layered glass often have a space between the panes filled with 98.8% Krypton or Argon gas. The gas acts as insulation between the panes, preventing heat transfer and making your home more comfortable.

Most Frequently Used Rooms to Install Sliding Windows 

Sliding windows are incredibly versatile and suitable for almost any room, as long as the rough opening allows for them.

They are a standard option for spaces with essential ventilation, such as laundry rooms, basements, bedrooms, bathrooms, and kitchens. 

Other areas where sliding windows are ideal include hard-to-reach places and horizontally oriented spaces.

Pros and Cons of Sliding Windows: All You Need to Know

Before choosing sliding windows, it is essential to consider their pros and cons.


  • Size: Sliding windows tend to be larger than double-hung windows, providing more natural light and optimal ventilation.
  • Energy Efficiency: Sliding windows are generally one of the most energy-efficient options for operable windows. They have fewer moving parts, meaning the air leakage level is lower. This can help you save money on energy bills and improve your home’s comfort, particularly in areas with harsh weather conditions.
  • Operation: Sliding windows are easy to operate, making them perfect for hard-to-reach places and convenient for families with children.


  • Maintenance: The tracks of sliding windows often gather debris over time, which requires frequent maintenance to keep them functioning correctly.
  • Cost: Although sliding windows are not the most expensive units, high-quality windows can still be costly.
  • Hardware: You may need to pay more for high-quality hardware to ensure better security for sliding windows.

Sliding vs Casement vs Hung Windows – What is Better?

The best window style for you depends on your preferences, home area, and goals. Here is a breakdown of the advantages of each window style:

Sliding Windows:

  • Aesthetics and energy efficiency mix
  • Optimal ventilation
  • Easy operation and unobstructed views outside

Casement Windows:

  • Best energy efficiency properties
  • High security
  • A traditional touch to your house exterior

Hung Windows:

  • Standard easy maintenance windows
  • Affordable option
  • Good ventilation

New Sliding Windows: What Costs to Expect?

The best windows and doors in Edmonton will be pricey, that’s for sure. It is a long-term investment in your property, so consider it an essential expense for comfort and peace of mind. 

The cost of sliding windows in Canada can vary depending on several factors, such as size, material, and features.

On average, the price tag for a new sliding window can range from $300 to $1,500, with installation costs adding $100 to $300 per window.

  • The material used in the window frame significantly contributes to a sliding window’s cost. 
  • Vinyl is often the most affordable material, followed by aluminum and wood, which can be the most expensive. 
  • The number of panes and the type of glass used, such as Low-E or triple-paned glass, can also affect the cost of the window.
  • Another factor that can impact the price is the manufacturer and the hardware quality used. High-quality hardware may cost more upfront, but it can provide better security and last longer, reducing the need for repairs or replacements.

Overall, it is essential to consider your budget, priorities, and long-term goals when selecting sliding windows for your home.

While cost is an important factor, it is also crucial to prioritize energy efficiency, durability, and functionality to ensure your investment is worthwhile.

The Bottom Line

In conclusion, sliding windows are an excellent choice for homeowners who want a balance of aesthetics and energy efficiency.

They are versatile and suitable for various rooms, and they are easy to operate. While they may require more maintenance than other window styles, sliding windows are still a great option for Canadian homeowners looking to save on their energy bills.

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